Screw-seated valve.



J. MENZIES.

SCREW SEATED VALVE. APPLICATION mm APR. 30'. 1911.

1 ,44,881 Patented Oct. 30, 1917.

JOI-IIN MENZIES, or new HAV N,- CONNECTICUT.

scnnw-snarnn V LVE;

To all whom it may concern:

Be it'known that I, JOHN lWENZI ESflj, citizen of the United States, residing at New Haven, in the county of New Haven and State of Connecticut, have invented a new and useful Im'provementin Screw-Seated Valves, and I 'do hereby declarethe followstem 10 upon whiqh it is locked by a locks ing, when'taken in connection with the accompanying drawings and the characters of reference marked thereon, to be a full, clear, and exact description of'the' same, and which said drawings constitute part ofthis application, and represent, in i Figure 1 a view in side elevation of a screw-seated valve constructed" in accordance with my invention.

Fig. 2 a plan view thereof.

Fig. 3 a viewthereof in central longitudinalsection, shown as mounted for use.,

Fig. 4 a detached view of the valve-plug, valil e, and retaining-nut, shown as disass'em blec. e 7

My invention relates to an improvement in screw-seated valves primarily designed for automobile tires, but capable of being used in a variety of other situations involving the use of air or gas under pressure, the object being to produce a simple, compact and con venient valve constructed with particular reference to preventing leakage of a1r or gas by the threads of the valve-plug when the valve is in its open position for charging.

With these ends in view, my invention consists in a screw-seatedvalve having certain details of construction and combinations of parts as will be hereinafter de,

scribed and claims. I

In carrying out my invention as herein shown, I employ an internally threaded cylindrical valve-body 2 having its lower end formed with an externally threaded mounting-shank 3 which is passed through an particularly recited in the opening 4 in the tire 5 and receives at its projecting end a retaining-nut 6 by means of which the said tire is pinched between'the said nut and a washer 7 bearing against a shoulder on the body 2. I do not limit myself, however, to any way of mounting my improved valve, since that will vary with the circumstances of its use. The said shank 3 is formed within its end with a beveled valve-seat 8 co-acting with a conical valve 9 preferably made of some soft metal like spelter and screwed upon a threaded valve- I specification of Letters Patent; Patented Application filedAp ril 3p, 1917. Serial No. 165,371, f g

, valve 9 is thus seated upon thevalve-seat 8.

nut" The with smooth round shank 12 projecting from the inner end of an externally threaded amlug 13 screwed into thevvalve-body 2 andhaving" its outer end formed with a nut-like "or facet-ed operatedportion 14' pro-.

jecting above the body Qandf rmed with ease, 19 1 anfinternally'andexteriially threaded eXtension 1'5 for the attachment to I it of male or; female hose-connections. i The underside of g the era-iris beveled and" provided with a spelter sealing-face 16 "co-acting with; a cor{ respondingly beveled sealingQseat 17 formed at the outer end of the valvebo dy,2. The

saidplug 13 is formed with [a longitudinal a r-passage or bore18' the contracted inner end 19 of'which intersects a transverse air passage 20 in the round shank 12,. the ends of thefsaid air' passage 20 opening into an annular air-passage 21 formed between the surface of the shank 12 and the walls of a bore 22 formedin the externally threaded shank 3 of the valve-body 2; v I

I It will be seen by reference to Fig. 3 of the drawings, thatby' turning the threaded valve-plug 13 from right toleft by its nut 14, the conical-valve'Q will be positively seated against the valve-seat 8 in the shank 3 of the valve-body 2, and that the spelter moved away from the sealing-seat 17 as sealing-face 16 will at tbesame timerbe clearly shown in Fig. 1. When the conical the valve is positively closed and any compressed air or'gas is prevented from passing outward from an automobile'tire or any other tank, through the valve. On the other hand, when for the purpose of blowing up the tire or charging the tank, the valve is opened by turning the plug 13 from left to right, the conical valve 9 will be moved away from the valve-seat 8 after which the spelter sealing-face 16 will be positively and solidly seated upon the sealing-seat 17, whereby the leakage of air between the eX- ternal threads of the plug 13 and the internal threads of the body2 will effectually be prevented. The action of the valve is thus I seen to be justment. V I claim positive in both phases of its ad- I 1. In a screw-seated valve in which the valve proper is brought to a solid bearing upon its seat in a direction corresponding to the direction of the pressure, the combination with an internally threaded valve body formed at its outer end with a sealingseat and at its inner end with an air-passage terminating in a valvesseat; or an=eXter 'nally threaded valve-plug adapted to be inserted into the said valve-body through the outer end thereof and toextend at its inner end through the said. air-passage,- provided has been locatedin, the valve-body, whereby when the valve plugis turned in one directionthe .valve is brought to a solidbearing upon thesaid valve-seat, and the said sealing-face moved away from the said sealingseat, and vice versa. f

I 2..In a screw-seated valve in which the valve proper is brought to a solid bearing upon the valve-seat in a direction corresponding to thedirection of the pressure, the combination with an internally threaded valve-body formed at its outer end with a sealing-seat, and at'its inner'end with an Copies of'this patent may be obtained for air-passage terminating in a valve-seat; of

Ian externally threaded valve-plug adapted outer encbwith a sealing-face oo-acting with the said sealing-seat and formed at its inner endwith a reduced shank provided with ducts intersecting. the said air-passage and terminating in a threaded stem, and a valve larger in diameter thanthe said air-passage adapted to be applied to the said threaded stein force-action: with the said valve-seat after thevalve-plughas been positioned Within the valve-body, whereby when the plug is turned in one direction the valve is brought to a solid bearing upon the said valve-seat, and the said sealing-face moved away from the said sealing-seat, and vice versa. I y I In testimony whereof, I havesigned this specification in the presence of two; subscribing witnesses. r

a JOHN MENZIES; ,Witnesses: I i

V GEORGE D. SEY OUR, M. P. NICHOLSi Washington, D.;0.f 

